{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfb26428687d5aeb52db979499e8b497c8f974ea8acb07f572b7a302ba803844c",
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    "signer": "0x3F4dD029446423638cBDF32E7a9A517229acDB45",
    "userId": "271820969"
  }
}